Vehicle pump condition response method and assembly

Abstract

An exemplary pump condition response method includes, in response to a pump condition, operating an engine to discontinue or prevent a first stop-start cycle during a drive cycle. The method permitting a second stop-start cycle during the drive cycle.

What is claimed is: 
     
       1. A pump condition response method, comprising:
 in response to a pump condition, operating an engine to discontinue or prevent a first stop-start cycle during a drive cycle, and then permitting a second stop-start cycle during the drive cycle. 
 
     
     
       2. The method of  claim 1 , wherein the pump condition is a recoverable fault. 
     
     
       3. The method of  claim 1 , wherein the pump condition is a first pump condition, and further comprising, in response to a second pump condition, operating the engine for a remainder of the drive cycle to prevent any stop-start cycle during the drive cycle. 
     
     
       4. The method of  claim 3 , wherein the second pump condition is non-recoverable fault. 
     
     
       5. The method of  claim 1 , wherein the first stop-start cycle and the second stop-start cycle are within the same drive cycle. 
     
     
       6. The method of  claim 1 , wherein the operating comprises idling. 
     
     
       7. The method of  claim 1 , wherein the pump condition is a recoverable fault and is received when the pump is commanded on and the engine is commanded off, and the method further comprises starting the engine and then receiving an additional pump condition later in the drive cycle, the method permitting the second stop-start cycle if the additional pump condition indicates that the pump has recovered from the recoverable fault. 
     
     
       8. The method of  claim 1 , wherein the pump condition is first pump condition, and further comprising, in response to a second pump condition, preventing any stop-start cycle during a remainder of the drive cycle. 
     
     
       9. An electrified vehicle assembly, comprising:
 a pump; 
 an engine; and 
 a vehicle controller configured to discontinue or prevent a first stop-start cycle by commanding the engine on in response to a pump condition received during a drive cycle, the vehicle controller further configured to permit a second stop-start cycle of the engine later in the drive cycle. 
 
     
     
       10. The assembly of  claim 9 , wherein the pump condition is a recoverable fault. 
     
     
       11. The assembly of  claim 9 , wherein the pump condition is a first pump condition, and the vehicle controller is further configured to command the engine to operate for a remainder of the drive cycle in response to a second pump condition. 
     
     
       12. The assembly of  claim 11 , wherein the second pump condition is a non-recoverable fault. 
     
     
       13. The assembly of  claim 9 , wherein the first stop-start cycle and the second stop-start cycle are within the same drive cycle. 
     
     
       14. The assembly of  claim 9 , wherein the pump condition is the recoverable fault and is received when the pump is commanded on and the engine is commanded off, and the controller is further configured to command the engine on and to permit the second stop-start cycle if an additional pump condition received later in the drive cycle indicates that the pump has recovered from the recoverable fault. 
     
     
       15. The assembly of  claim 9 , wherein the pump condition is first pump condition, and further comprising, in response to a second pump condition, preventing any stop-start cycle during a remainder of the drive cycle. 
     
     
       16. The assembly of  claim 9 , wherein the vehicle controller comprises a powertrain control module. 
     
     
       17. The assembly of  claim 9 , wherein the engine, the pump, and the vehicle controller are portions of a stop-start vehicle. 
     
     
       18. The assembly of  claim 9 , wherein the engine, the pump, and the vehicle controller are portions of an electrified vehicle. 
     
     
       19. The method of  claim 1 , further comprising communicating fluid through the engine using a pump, the pump condition a condition of the pump that communicates fluid through the engine. 
     
     
       20. The assembly of  claim 9 , wherein the pump operates to influence a pressure of a fluid within the engine.